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Finding the Fourth Proportional to 3,549.87, 5,321.21 and 1,698.27

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Solution

The fourth proportional to 3,549.87, 5,321.21 and 1,698.27 is: 2,545.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,549.87 : 5,321.21 = 1,698.27 : x
  2. Step 2: Convert to fraction form
    3,549.87/5,321.21 = 1,698.27/x
  3. Step 3: Cross multiply
    3,549.87x = 5,321.21 × 1,698.27
  4. Step 4: Simplify right side
    3,549.87x = 9,036,842.82
  5. Step 5: Solve for x
    x = 9,036,842.82/3,549.87
  6. Step 6: Final answer
    x = 2,545.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.